'Avengers: Infinity War' explosive first trailer arrives

LOS ANGELES (Variety.com) - The explosive first trailer for Avengers: Infinity War has finally arrived.

Marvel Studios dropped the official trailer Wednesday during ABC's Good Morning America.

The powerful first footage shows the mother of superhero team-ups -- the Avengers, the Guardians of the Galaxy, and almost every other major Marvel hero joining forces to take on Thanos (Josh Brolin), who is trying to collect the Infinity Stones, on several battlefronts.

"There was an idea to bring together a group of remarkable people, to see if we could become something more. So when they needed us, we could fight the battles that they never could," the characters say in the trailer's opening.